Dr. Kathan D. Mehta

Shirley Ong, MD, specializes in hematology oncology and is board-certified in neurology by the American Board of Psychiatry and Neurology. She practices at UPMC Hillman Cancer Center and is affiliated with UPMC Shadyside and UPMC Presbyterian. Dr. Ong received her medical degree from the University of the East Ramon Magsaysay Memorial Medical Center and completed her residency at Saint Louis University School of Medicine, followed by a fellowship at the University of Texas MD Anderson Cancer Center. Dr. Ong is rated as a Distinguished provider by MediFind in the treatment of Metastatic Brain Tumor. Her top areas of expertise are Glioblastoma, Astrocytoma, Glioma, and Brain Tumor.

Roby A. Thomas, MD, is a medical oncologist and hematologist at UPMC Hillman Cancer Center. Dr. Thomas is trained in the management of all cancers and blood disorders with a focus in genitourinary and gastrointestinal malignancies. Dr. Thomas is rated as an Advanced provider by MediFind in the treatment of Metastatic Brain Tumor. His top areas of expertise are Prostate Cancer, Pancreatic Cancer, Familial Pancreatic Cancer, Gamma Knife Radiosurgery, and Endoscopy.

John K. Waas, DO, is a medical oncologist at UPMC Hillman Cancer Center who practices at Arnold Palmer Medical Oncology at Norwin. Board-certified in medical oncology, Dr. Waas received his medical degree from Philadelphia College of Osteopathic Medicine in Philadelphia. He completed his residency at Lehigh Valley Hospital Center in Allentown, Pa. Dr. Waas is rated as a Distinguished provider by MediFind in the treatment of Metastatic Brain Tumor. His top areas of expertise are Protein C Deficiency, Protein S Deficiency, Congenital Antithrombin 3 Deficiency, and Hereditary Resistance to Anti-Vitamin K.